13466-41-6

基本信息
2-羥基-4-甲基吡啶, 98+%
4-METHYL-2(1H)-PYRIDINONE
4-METHYL-2(1H)-PYRIDONE
4-METHYL-2-PYRIDINOL
4-METHYL-2-PYRIDONE
4-METHYL-PYRIDIN-2-OL
2-HYDROXY-4-METHYLPYRIDINE 97%
2-Hydroxy-4-Piocoline
4-Methyl-2-Hydroxypyridine
4-Methyl-2(1H)-pyridinone 4-Methyl-2-pyridinol 4-Methyl-2-pyridone
2-HYDROXY-4-METHYLPYRIDINE (2-HYDROXY-4-PICOLINE)
2-Hydroxy-4-methylpyridine, 98+%
2-Hydroxy-4-methylpyridine ,97%
4-Methyl-1,2-dihydropyridine-2-one
4-Methylpyridine-2-ol
物理化學(xué)性質(zhì)
安全數(shù)據(jù)
常見問題列表

695-34-1

13466-41-6
以2-氨基-4-甲基吡啶為原料合成2-羥基-4-甲基吡啶的一般步驟如下:中間體V-a(4-甲基吡啶-2-醇)的合成參照Adger等人于J. Chem. Soc. Perkin Trans. 1, 1988, p2791-2796報道的方法進行。向裝有水(240 mL)的1 L燒瓶中加入濃HCl,隨后冷卻至0℃。一次性加入2-氨基-4-甲基吡啶(30 g,277 mmol),然后在1小時內(nèi)逐滴加入NaNO2(20.6 g,299 mmol)的水(40 mL)溶液,確保內(nèi)部溫度不超過5℃。反應(yīng)混合物在0℃下攪拌1小時后,加熱至95℃,保持15分鐘,隨后冷卻至室溫。用50% NaOH水溶液調(diào)節(jié)pH至6-7(注意放熱),趁熱用EtOAc(4×120 mL)萃取。合并有機相,用MgSO4干燥,過濾后蒸發(fā)溶劑,得到米色結(jié)晶固體中間體V-a(24.5 g,產(chǎn)率81%)。1H NMR(300 MHz, DMSO-d6)δ 11.31(s, 1H), 7.23(d, J = 6.7 Hz, 1H), 6.10(s, 1H), 6.00(dd, J = 6.7, 1.2 Hz, 1H), 2.10(s, 3H)。
參考文獻:
[1] Patent: WO2013/14170, 2013, A1. Location in patent: Page/Page column 77-78
[2] Chemische Berichte, 1924, vol. 57, p. 794
[3] Organic Syntheses, 2002, vol. 78, p. 51 - 51
知名試劑公司產(chǎn)品信息
2-Hydroxy-4-methylpyridine, 97%(13466-41-6)